Hi!
I'd like to ping
PR87506 - https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01758.html
You've acked the patch with the asserts but that FAILs as mentioned
in the above mail. The following has been bootstrapped/regtested
and works, can it be committed without those asserts and let those
be handled incrementally later (though, I'm afraid I'm not familiar enough
with resolving those).
Thanks.
2018-11-21 Jakub Jelinek <ja...@redhat.com>
PR c++/87506
* constexpr.c (adjust_temp_type): Handle EMPTY_CLASS_EXPR.
* g++.dg/cpp0x/constexpr-87506.C: New test.
--- gcc/cp/constexpr.c.jj 2018-11-16 21:35:34.551110868 +0100
+++ gcc/cp/constexpr.c 2018-11-19 09:35:06.880386449 +0100
@@ -1280,6 +1280,8 @@ adjust_temp_type (tree type, tree temp)
/* Avoid wrapping an aggregate value in a NOP_EXPR. */
if (TREE_CODE (temp) == CONSTRUCTOR)
return build_constructor (type, CONSTRUCTOR_ELTS (temp));
+ if (TREE_CODE (temp) == EMPTY_CLASS_EXPR)
+ return build0 (EMPTY_CLASS_EXPR, type);
gcc_assert (scalarish_type_p (type));
return cp_fold_convert (type, temp);
}
--- gcc/testsuite/g++.dg/cpp0x/constexpr-87506.C.jj 2018-11-19
09:33:07.795341369 +0100
+++ gcc/testsuite/g++.dg/cpp0x/constexpr-87506.C 2018-11-19
09:33:07.795341369 +0100
@@ -0,0 +1,12 @@
+// PR c++/87506
+// { dg-do compile { target c++11 } }
+
+struct A {};
+struct B { constexpr B (const A) {} };
+struct C : B { using B::B; };
+
+void
+foo ()
+{
+ C c (A{});
+}
Jakub
